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Catalogue: GRDC Updates (South)
Topic Welcome Breaking the yield barrier in grain sorghum Agronomy for success in high yield sorghum years on the Northern Downs.. The study presents output from the APSIM model to quantify the effects of the various strategies... I believe a key factor in the success of many of today's leading agricultural enterprises has been their ability to have their children acquire an education and experience that will equips them to make a meaningful contribution to the business...
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Catalogue: GRDC Updates (South)
Modelling the risks involved with splitting N application at Bellata over a number of years.. Current best nitrogen management practice is generally to assess soil water and soil nitrogen levels before sowing, estimate yield potential and fertilise all prior to, or at, sowing because it is too risky to apply in-crop... There is a large decrease in frequency from one to two rainfall events, suggesting growers would need to be very organised and be able to respond in a short time frame to take advantage of incrop N application opportunities...
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Catalogue: GRDC Updates (South)
Topic Crown rot: Inoculum loads going into 2006; rotation strategies and impacts; Precision row placement to aid crown-rot management... Driftability of amine formulations The 2,4- D products Surpass and Amicide 625 which were used in the trial are considered to be nonvolatile any drift that is associated with these products will be droplet drift not vapour drift... Fungicides as foliar, seed or fertiliser treatments will play a role in the integrated management of this disease until new varieties with improved resistance become available...
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Catalogue: GRDC Updates (South)
Improving water use efficiency using cover crops of millet... Soil water was measured at cover-crop planting, time of spray-out (2004 replicated sites and all 2005 sites) and at all sites at winter crop planting... In the analysis an average world oil price of US$68.40 a barrel (West Texas Intermediate) and an exchange rate of US74 cents is assumed...
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Catalogue: GRDC Updates
Applicator decisions including nozzle selection, operating pressure and spray solution components and ratios influence both efficacy and drift... Droplet size of each treatment was evaluated at the wind tunnel facility in North Platte, NE, using a diffraction laser... For each of these nozzles and spray solutions, we determined the droplet size using a low-speed wind tunnel in College Station, TX...
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Catalogue: GRDC Updates
Maximising spray efficiency: The tactics to optimise results.. Spray operators need to be able to identify weather conditions associated with inversions... Technology has thrown up a series of challenges that require an improvement in the observation skills of advisers...
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Catalogue: GRDC Media
Growers should choose nozzles for their band, boom or shielded sprayers that offer versatility and can deliver the correct amount of spray to the target... Help in selecting the right kinds of nozzles is at hand with the Grains Research and Development Corporation's (GRDC) The Back Pocket Guide: Nozzle selection for boom, band and shielded spraying , written by Mr Gordon and fellow spraying expert, Graham Betts of ASK GB... "With banded and shielded spraying becoming more popular, growers may need to use formulas to calculate the application rates, or to select the most appropriate nozzle size and pressure, as most nozzle charts only cover 50cm sprayed widths, and shields and bands rarely match this," Mr Gordon said...
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Catalogue: Ground Cover
Ashley Ramm uses a self-propelled boomspray fitted with low-drift nozzles to improve efficiency and herbicide efficacy... The machine is fitted with triplex nozzle bodies that allow Mr Ramm to block off every second outlet and spray at lower water rates (less than 50 litres/ha) were applicable (500mm nozzle spacing) while maintaining a line pressure suitable for his nozzles... Mr Ramm says the sale of all sheep almost two years ago gave him the opportunity to be away from the farm for up to two weeks, which allows him to send his children - aged 13 and 11 - to high-quality schools located five minutes from their Mandurah home. "..
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Catalogue: GRDC Updates (North)
Modelling the risks involved with splitting N application at Bellata over a number of years.. Current best nitrogen management practice is generally to assess soil water and soil nitrogen levels before sowing, estimate yield potential and fertilise all prior to, or at, sowing because it is too risky to apply in-crop... There is a large decrease in frequency from one to two rainfall events, suggesting growers would need to be very organised and be able to respond in a short time frame to take advantage of incrop N application opportunities...
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Catalogue: GRDC Updates (North)
Optimising herbicide use - know your products and how they work.. Quirindi Grains Research Update 22 ndFebruary, 2006 100 80 60 ) 40 % 20 ( y0 t 0 i 0 10 200 300 0 100 200 300 r e Bravo-Quadris Folicur v e100 s e 80 s a 60 e s 40 i D 20 0 0 100 200 300 0 100 200 300 Headline Quadris Volume (L/ha) Ascochyta disease severity on Yuma (fern leaf type - Kabuli) with four fungicides and three carrier volumes @ 2.75 bar... In summary The work we have undertaken over the past five years conforms to the UK/Western European production systems when grown under irrigated conditions in Australia...
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